Plankton net



FIG. 1 is a top view of the mouth of the plankton net showing my new design,

FIG. 2 is a side view of the mouth of the plankton net,

FIG. 3 is a side view of the net bucket,

FIG. 4 is a bottom view of the net bucket; and

FIG. 5 is a side view of the plankton net showing my new design. 

The ornamental design for a plankton net, substantially as shown. 